Oct 1, 2012 11:00am EDT
haven't been seen before their home burned down last week. patti ann browne live from our is that correct? newsroom with more. >> they lived with their grandmother. the remains of the grandparents were found after the braise. firefighters spent a week looking for evidence of 9-year-old chloe and 7-year-old gauge. they have not found any proof that the kids were there when the fire happened at 9:30 p.m. they were seen three hours before the fire started. did they run out of the blazing house or did they die in the house and their remains were incinerated? in case the kids are alive tennessee authorities are asking for the public's help in finding them. the kid's relatives meanwhile don't know what to think. >> it is very difficult. if we just had ashes, you know, their little bodies. but we don't have anything. >> reporter: investigators say the biological parents of the children are cooperating. the cause of the fire is still unknown. jenna? jenna: what a mystery. we'll continue to watch it, patti ann. thank you. gregg: some of those withering criticism to date of president obama'